ss.data.thickness2 {SixSigma}

Metal Plates thickness (extended)

Description

This data set contains the thickness and additional data for 84 metal plates.

Usage

data("ss.data.thickness2")

Format

A data frame with 84 observations on the following 5 variables.

day

a factor with the day (seven days)

shift

a factor with the shift (two shifts)

thickness

a numeric vector with the thickness (in)

ushift

a factor with the day-shift combination

flaws

an integer vector with the number of flaws on the surface of sampled plates

Details

This data set illustrates concepts in the book “Quality Control with R”.

Source

Examples 8.1 and 9.9 in the reference below.

References

Cano, E.L. and Moguerza, J.M. and Prieto Corcoba, M. (2015) Quality Control with R. An ISO Standards Approach. Springer.

Examples

data(ss.data.thickness2)
str(ss.data.thickness2) 
lattice::dotplot(thickness ~ shift | day,
    data = ss.data.thickness2,
    layout = c(7, 1))